Ábrahám Levente – Farkas Sándor: Butterflies along the river Drava, 2008

In the majority of areas along the river, quite frequent species are pearly heath (Coemmympha arcania) [52], lesser spotted fritillary (Melitaea trivia) [53] and common blue (Polyommatus karus) [54]. The general coloration of males of the common blue is sky-blue, whereas its females are brownish.